Puppet in the City

This is Seifuku-chou. The crime rate is always zero, there's nothing but good people all around. Violence is silly, and even speaking ill of others is not possible. Naturally, Kokoro Shiozaki thought this too. Until she meets the strange transfer student Kyou Miyabe... "I'll show you just what kind of town this really is."

(Source: Shu-Cream, translated)